Improvement isss throttle-valve levers for locomotives



JOH-N MILLS.

- Improvement in Throttle Vdive Levers for Locor ribtives.

NO. 1.24.606 PatentedMarchl2J872.

msgs Inventor: W k,

JOHN MILLS, OF NEWFIELD, NEW JERSEY, ASSIGNOR OF ONE-HALF HIS RIGHT T0 THOMAS TIMMINS, OF PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT IN THRQTTLE-VALVE LEVERS FOR LQCOMOTIVES.

Specification forming part of Letters Patent No. 124,606, dated March 12, 1872.

SPECIFICATION. I, JOHN MILLS, of N ewfield, in the county of Gloucester and State of New Jersey, have invented certain Improvements in Throttle- Levers for Locomotive Engines, of which the following 1s a specification:

Nature and Object of the Invention.

Description of the Accompanying Drawing.

Figure 1 is a front view of my invention. Fig. 2 1s a back view of the same. Fig. 3 is a top view of the same.

General Description.

0 is an ordinary throttle-lever, in the center of which is formed a rectangular opening, 0. Pivoted and working on the lever (J is a rack, A, to which is attached the throttlestem T, working in the opening 0, and having its bearings on one side 5 and on the top and under part of the lever O, is a bracket, B. At-

tached to said bracket, and gearing with the rack A, is a screw or worm, \V, which regulates the opening or closing of the throttlevalve by means of the hand-wheel E. Gonnected with the bracket B, and extending toward the handle H of the lever 0, where it is pivoted to a curved lever, U. Pivoted to lever G is a rod, D, riveted to the lever O and extending up under the'handle H is a spring, P.

Operation. To regulate the amount of steam desired,

the hand-wheel E is turned and revolves the worm or screw W, which, gearing with the' rack A attached to the throttle-stem '1, opens or closes the throttle to one-thousandth part of an inch. The rack A can be immediately placed out of gear when desired by pressing the lever O, which draws on the rod D and bracket B. Y

Having thus described my invention, what I claim, and desire to secure by Letters Patent, 1s-- The combination and arrangement of the levers G (3, rod D, bracket B, worm or screw W, rack A, throttle-stem T, and spring P, so as to operate substantially as and for the purpose specified.

JOHN MILLS.

Witnesses:

JAMES A. PEARSON, JAMEs B. Lovn. 

